<tr ng-show="vm.$table.fetchTimes > 0 && vm.$table.pagination.total == 0 && !vm.$table.isTableLoading">
  <td colspan="{{length}}">
    <div>暂无数据</div>
  </td>
</tr>
<tr ng-show="vm.$table.isTableLoading">
  <td colspan="{{length}}">
    <div>数据加载中...</div>
  </td>
</tr>
